Sheet Music Folder: Used to hold sheet music, documents etc, music folder song sheet holder clef paper storage for A4 size paper with 40 Pockets. Material: The inner pockets are anti-skid and transparent with high quality Polypropylene (PP) material, spiral binding allows the folder to open at a 180-degree angle for flat sheet music. Convenient to Write: Center hollow-out design, there is no barrier between the diaphragm in the middle, music song sheet clef could be marked or modified when practice playing, even when it is on the stage. Perfect for: Suitable for daily filing and storing of A4 sized documents and lesser than A4, widely used in office, school and home, works equally well on piano, organ or performance synthesizer. Easy to Use: Choir chorus and piano sheet music and other papers can be inserted, standard display book, easy to put in and take out of the music sheet or files.